AMX RDM-2FDB User Manual

Installation Sheet

RDM-2FDB Dual Channel Lutron FDB Ballast Dimmer

1920 W

The RDM-2FDB Dual Channel Ballast Dimmer is a 1920 W positive air gap relay and dimmer, built for strength and for reliable switching/dimming of Lutron FDB ballasts. It is designed for use with the RDA series of enclosures, in a AMX Lighting™ modular digital dimming system. The RDM2FDB module's 120, 240, and 277 VAC ratings are CE, UL, and C-UL approved.

Mounting points

Positive air gap relay

FIG. 1 RDM-2FDB

Relay Line in (hot)

Switched out Dimmed out

Relay Line in (hot) Switched out Dimmed out

Fuse

Low-voltage control wiring: 4-pin connector to AMX Lighting master controller

Ballast A

Ballast B

RDM-2FDB UL and C-UL Ratings

• 120 VAC, 1920 W

• 240/277 VAC, 1920 W

Suggested Dimmed Loads

• Most 3-wire dimmable fluorescent ballasts

• Lutron

• Lutron Eco-10

Hi-Lume® FDB Ballasts

Ballasts

Specifications:

• Dimensions (HW): 10.0" x 2.75" (25.4 cm x 6.99 cm)

• Dimmed output protected by a 250 mA GMA 5 x 20 mm fuse

• Phase dependant

• Use wires rated at 75°C (167°F)

• Torque terminals to 20 in-lbs. (2.3 N/M)

• Max. wire size: 10 AWG (4 mm²)

• Wire stripping length: 0.28" (7 mm)

• Weight: 1.5 lbs. (0.68 kg)

•BTU/hr: 5

• Control current: 85 mA @ 12 VDC

• For use with FDB ballasts

Caution: Pre-Installation Notes

• All Class 1 wiring must be connected to proper terminals.

• All control wiring must be connected to proper terminals.

• Disconnect power while installing or connecting the unit.

• Keep top and bottom air vents clear at all times.

• Use field installed copper conductors.

• All electrical ratings are for continuous duty.

• For indoor use only.

• This module may require extra power from the AXlink connection or an external power supply connected to the control card.

Connecting the RDM-2FDB to the AMX Lighting Master

Pin 3 (RLY)

Pin 2 (DIM)

Pin 1 (+12 V)

RDM-2FDB 4-pin module connector

3 (-) 2 (AC)

1 (+)

4-pin plug from RDM series module

Note: The 4-pin plugs from the module connector to the 4-pin connector on the master (black plug cover facing up).

FIG. 2 RDM-2FDB connections

Lighting Application Drawing

All neutrals are common to the Neutral block in the enclosure. Provide a separate neutral for each load.

Circuit breaker panel

FIG. 3 RDM-2FDB wiring configuration

Neutral

Line in (HOT)

Neutral

Florescent Ballast

BALLAST

Ballast

Switched

Dimmed

The fuse protects the dimming circuit from a low impedance load.

• The fuse would blow if it were incorrectly wired

• Catastrophic ballast failure

• Reversing switched and dimmed circuits

• Reversing dimmed and line circuits.

The dimmed output must be connected to a high impedance load.

AMX Corporation reserves the right to alter specifications without notice at any time.

For full warranty information, refer to the AMX Instruction Manual(s) associated with your Product(s).

The AMX logo is a trademark of AMX Corporation. AMX Corporation reserves the right to alter specifications without notice at any time.

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